ON THE ERRATIC BLOCKS OF ENGLAND, WALES, AND IRELAND. 217 



164. Much worn and rounded pebble, with a few scratclies. Com- 

 pacfc, Avhito sandstone. 10 in. x 6 in. X ?. 



165. Rounded, broken piece. Fine sandstone. 9 in. x 7 in. x 4 in. 



166. Rectangular, broken slab (probably not a boulder). Oolitic 

 limestone. 12 in. x 10 in. x 3 in. 



167. Rounded, smoothed and worn. Hard sandstone: probably 

 iieocomian. 10^ in. x 9 in. x ?. 



168. Rounde"d, worn. Fine sandstone: probably Jurassic. 11 in. 

 (about) X 7^ in. X ?. 



169. Wedge-shaped, worn pebble. Ferruginous, calcareous sand- 

 stone : probably Jurassic. 7^ in. x 6 in. X 4 in. 



170. Rough, slightly worn. Limestone, with serpnla : Jurassic. 8|in. 

 X 7 in. X 6 in. 



171. Rough slab, little worn. Ferruginous sandstone : neocomian 

 or possibly itierior oolite ironstone. 13 in. x 6^ in. x 8^ in. 



172. Prism-shaped, faces flat and smoothed, angles a little worn. 

 Basalt. 10 in. x 5^ in. x 5 in. 



173. Worn slab. Coarse grit : perhaps neocomian. 10^ in. x 7^ in. 

 X 3 in. 



174. Broken slab, hardly worn. Sandstone. 9^ in. x 8 in. x 3|in. 



175. Rounded, nearly spherical, smoothed. Limestone, with serpula, 

 &c. Jurassic. 11 in. x 8 in. x 7 in. 



176. Worn, rounded, smooth pebble. Hard sandstone. 8^ in. x 7 in. 

 X 3 in. 



177. Irregularly. shaped, worn, angles but little rounded off. Basalt. 

 121 in. X 7 in. X 6^ in. 



"178. Slightly worn fragment of a slab. Rather ferruginous sand- 

 stone. 11^ in. x 5 in. X 3 in. 



179. Long, smoothed and worn boulder. Sandstone. 11^ in. x 5^ in. 

 X 3 in. 



180. Rough, irregular, little-worn pebble. Fine sandstone : probably 

 carboniferous. 7 in. x 7 in. x 6 in. 



181. Flat, broken slab, little worn. Fine sandstone : possibly Jurassic. 

 13 in. X 9^ in. x 5 in. 



182. Rounded, worn, smoothed, nearly oval pebble. Sandstone : 

 probably neocomian. 8 in. x 6 in. X 5i in. 



183. Rectangular, little- worn block. ' Fine, hard sandstone : probably 

 carboniferous. 11 in. x 6| in. x ?. 



184. Worn slab. Coarse sandstone or grit : millstone grit, almost 

 certainly. 11 in. x 9 in. x 4 in. 



185. Wedge-shaped, worn pebble, with flat faces, and angles little 

 worn. Fine, ferruginous sandstone : probably neocomian. 9^ in. x 7 in. 



X 4 in. 



186. Irregularly-shaped, smoothed and worn. Basalt. 16 in. x 9 in. 

 X 8 in. 



187. Worn, rough block. Fine ferruginous sandstone : probably neo- 

 comian. 10 in. X 6 in. X 6 in. 



188. Worn, smoothed. Fine sandstone : possibly Jurassic. 2 ft. in. 

 X 1 ft. 3i in. X ?. 



It will be observed that none of these specimens are local. The 

 general derivation is from the Oolites of the Midlands and from Car, 

 boniferous and other rocks of more northern districts. 



